How big a deal is the CEO of Barneys New York? Big enough that Katie Holmes cut short a conversation during her New York Fashion Week presentation to embrace him, exclaiming, “I’m your neighbor!”

Mark Lee, who is well known in fashion but is no household name, oversees one of the most influential U.S. fashion retailers. The former Mrs. Tom Cruise could use his juice. She was touting Holmes & Yang on Wednesday, a line of luxury daywear that she cooked up with longtime stylist Jeanne Yang.

New York is becoming clogged with celebrities launching fashion lines. Fashion insiders swoon over The Row, designed by the Olsen twins, and Victoria Beckham’s eponymous line.

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